Tires Size 255/55R18
Dimensions, specs, and every size 255/55R18 tire currently in stock
29.04"
738 mm · calculated
255 mm
10.04 inches
5.52"
140.3 mm · 55% profile
18"
457.2 mm
Showing 1 to 1 of 1 products
255/55R18 Specifications
Read directly from the size code. Load index, speed rating, and rim width range vary by model.
| Specification | Imperial | Metric |
|---|---|---|
| Section width | 10.04 in | 255 mm |
| Aspect ratio | 55% | — |
| Sidewall height | 5.52 in | 140.3 mm |
| Overall diameter (calculated) | 29.04 in | 738 mm |
| Wheel / rim diameter | 18 in | 457.2 mm |
| Construction | Radial | — |
What does 255/55R18 mean?
Reading the code on your sidewall
255 mm
The distance from sidewall to sidewall across the tire's widest point.
55% profile
The sidewall stands 55% of the section width, which is 140.3 mm on this size.
Radial
The body plies run across the tire at right angles to the direction of travel.
18 in
Fits a wheel measuring 18 inches across.
255/55R18 Questions & Answers
Dimensions and fitment guidelines for size 255/55R18
Need Help Choosing The Right Tires?
Have questions about fitment, brands, or pricing? Our team of tire experts is here to guide you to the perfect set — zero pressure, zero sales tactics.
Talk to a Tire Specialist Today
We make tire buying fast and effortless. Call or email us (Mon – Sat, 9AM – 5PM PT) to check size compatibility, load index, or speed ratings for your vehicle.
Expert Advice
Reply within 1 business day
Shop Our Collection
Explore premium tires, wheels, and fitments from top brands
Nokian WR SUV3 Studless Winter 235/55R20
Ironman Iron All Country HT 4S 245/60R18
Ironman Iron All Country HT 4S 245/60R18
Toyo 225/40R18XL Toy Observe G3-ICE Studded 225/40R18
Toyo 225/40R18XL Toy Observe G3-ICE Studded 225/40R18
Gladiator Comp A/T P275/55R20
Armstrong Blu-trac HP 225/50R17
Royalblack Terra Force Rtx R/T LT265/75R16
Itp 24X9.00-11/6 Mud Lite AT 24X9.00-11
Itp 24X9.00-11/6 Mud Lite AT 24X9.00-11
Roadtrack Terrena UHP 225/55ZR19
Ironman Iron Imove Gen AS 195/65R15
Ironman Iron Imove Gen AS 195/65R15
Barkley Aphelios UHP 275/45R20
Gripmax Maxgrip R/T 305/45R22
Nokian WR SUV3 Studless Winter 235/55R20
Ironman Iron All Country HT 4S 245/60R18
Ironman Iron All Country HT 4S 245/60R18
Toyo 225/40R18XL Toy Observe G3-ICE Studded 225/40R18
Toyo 225/40R18XL Toy Observe G3-ICE Studded 225/40R18
Gladiator Comp A/T P275/55R20
Armstrong Blu-trac HP 225/50R17
Royalblack Terra Force Rtx R/T LT265/75R16
Itp 24X9.00-11/6 Mud Lite AT 24X9.00-11
Itp 24X9.00-11/6 Mud Lite AT 24X9.00-11
Roadtrack Terrena UHP 225/55ZR19
Ironman Iron Imove Gen AS 195/65R15
Ironman Iron Imove Gen AS 195/65R15
Barkley Aphelios UHP 275/45R20
Gripmax Maxgrip R/T 305/45R22